Combined messenger-call and telephone



(No Model.) G. E. CHRISTIE.

COMBINED MESSENGER CALL AND TELEPHONE.

No. 508,568. Patented Nov. 14, 1893.

WITNESSES: INVENTOR BY R ATTORN EYQ UNITE STATES "PATENT QFFICE;

GEORGE E. CHRISTIE, OF PATERSON, NEW JERSEY.

COMBINED v MESSENGER-CALL AND TELEPHONE.

SPECIFICATION forming part of Letters Patent No. 508,563, dated November14, 1893- I Application filed February 24, 1893. Serial 110.463.5558.(No model.)

i To aZZ whom it may concern.-

Be it known that I, GEORGE E. CHRISTIE, a citizen of the United States,residingin Paterson, county of Passaic, State of New Jersey, haveinvented certain new and useful Improvements in a CombinedMessenger-Call and Telephone; and I do hereby declare the following tobe a full, clear, and exact description of the invention,such as willenable others Skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawing, and toletters of reference marked thereon, which form a part of thisspecification.

My invention relates to certain new and useful improvements in acombined messenger call and telephone, and itconsists in placing in themain circuit of a messenger cal] box a telephone with a switch, by meansof which the telephone may be alternately brought into and out of themain circuit, and when brought in, the call box is thrown out ofcircuit.

It also consists in the-combination and arrangement of parts whereby thecall box and telephone may be alternately used, and also in thecombination and arrangement of parts substantially as hereinafterdescribed and claimed.

The drawing is a diagrammatic view of my present invention; the variouswire connections being indicated thereon.

In said drawing, a represents a messenger I box a and leaves the latterthrough Wires 0 and 10 having the intermediate switch ring '5. Thewire 1) leads to the telephone receiver 0, the latter being alsoconnected by wire (1 to the binding post tot the secondary coil of thetransmitter b. The other end of said secondary coil is connected throughbinding post 3 with the main circuit wire at. The binding post 8 is alsoconnected to the contact piece 6 by the wirer. The primary coil of thetransmitter b is connected by wires u and o and intermediate primarycoil B with the battery d in the usual manner.

In operation the receiver a of the telephone is suspended by switch ringt' upon the switch arm f, thus depressing said switch arm and thusbringing the call box in the main circuit. This is the normal positionof the apparatus, thatis to say the main circuit transmitter b andreceiver 0 both into the main circuit, which is completed through wiresm, 0,10, and wires q and n. The message is then sent over the telephonedirect to the station. By this arrangement the operator can transmit tothe station the message to be delivered without waiting for a messengerto come from said station to his office and thus time andunnecessarylabor arethereby saved.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

In a messenger call system, the combination of the call box and the maincircuit, a telephone receiver placed in said main circuit, a switch ringplaced in said main circuit between the call box and the receiver, withthe transmitter and its induction coil placed in the primary circuit ofthe telephone battery, and with the secondary circuit of the inductioncoil, connected through one binding post with one pole of the receiverand through another binding post with the contact plate of a switch, andwith a spring controlled arm adapted to receive the switch ring, allsaid parts being so arranged, that when the switch ring rests on theswitch arm,

the telephone receiver and transmitter are l have hereunto set my handthis 20th day of cut 01111; of the main circuit, and when said February,1893. switc 1 ring is released from said switch arm, A said receiver andtransmitter are brought in GEORGE CHRISTIE" 5 the main circuit,substantially as and for the \Vitnesses:

purposes described. HENRY E. EVERDING, In testimony that I claim theforegoing I ALFRED GARTNER.

